package net.lshimokawa.pap6;

public class Calculadora {

	public final int sumar(int a, int b) {
		return a+b;
	}

	public final int restar(int a, int b) {
		return a-b;
	}

	public final int multiplicar(int a, int b) {
		return a*b;
	}

	public final int dividir(int a, int b) {
                if (b!=0)
                {
                   return a/b;
                }
                else
                {
                   return -1;
                }
	}
}
